Speedmeter Type Approval

We have a received a request under the Freedom of Information Act 2000 for the following:
“I have been advised that speed camera equipment …

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We have a received a request under the Freedom of Information Act 2000 for the following:
“I have been advised that speed camera equipment must be type approved by the Home Office to agreed standards. I am researching Gatso Type 24 speed cameras and request information to ascertain the focal length of the lens approved for such cameras, and the maximum aperture specifications for the same equipment.”